Question

question
graph the interval represented in interval notation on the number line.
(-∞, -9) ∪ (-1, ∞)
answer attempt 1 out of 1
number line:

Explanation:

Step1: Understand open - interval notation

Open intervals use parentheses. For $(-\infty, - 9)$, all numbers less than - 9 are included. For $(-1,\infty)$, all numbers greater than - 1 are included.

Step2: Mark on number - line

On the number - line, draw an open circle at - 9 (since - 9 is not included in $(-\infty,-9)$) and shade to the left towards negative infinity. Then draw an open circle at - 1 (since - 1 is not included in $(-1,\infty)$) and shade to the right towards positive infinity.

Answer:

On the number - line, place an open circle at $x=-9$ and shade the line to the left of $x = - 9$. Place an open circle at $x=-1$ and shade the line to the right of $x=-1$.